Why Does Jewellery Turn Green? How to Stop It Happening in Australia
That green mark on your skin from cheap jewellery is one of the most common jewellery complaints in Australia. It looks bad, it is hard to get off your skin, and it usually means the piece is ruined. This guide explains exactly why jewellery turns green, which metals cause it, which materials never will, and what to look for when buying jewellery so it never happens again.
Jewellery turns skin green because cheap base metals like copper and brass oxidise and produce green copper salts that transfer to skin. It is not harmful but it does mean the piece is made from reactive materials. 18K PVD gold plated stainless steel does not cause this reaction.
The Science Behind the Green Mark
The green discolouration on your skin is not paint. It is not dye. It is a chemical reaction called oxidation, and it involves copper.
Most affordable gold plated jewellery uses brass or copper as the base metal. Brass itself is an alloy of copper and zinc. When copper is exposed to moisture, oxygen and the mild acids present in human sweat, it oxidises and forms copper salts. The most visible of these is copper carbonate, which is green. This green compound transfers onto skin wherever the piece is in direct contact.
The gold layer on top of the piece is supposed to prevent this by keeping your skin away from the copper base. But standard electroplated gold layers are extremely thin, often less than half a micron. They wear away with regular use, washing and sweat exposure. Once they go, the copper base is exposed and the green reaction begins.
The green on your skin is not from the gold. It is from the metal underneath the gold. That is the part that matters, and most cheap jewellery does not tell you what it is.
Is Green Skin From Jewellery Harmful?
The green discolouration itself is not harmful. Copper oxidation products are not toxic at the levels produced by jewellery wear. The green washes off with soap and water and does not cause lasting skin damage.
However, it is worth distinguishing between two different things that can happen when wearing cheap jewellery. The first is the green copper reaction described above, which is a chemistry issue and not a sensitivity issue. The second is a genuine metal sensitivity reaction, most commonly to nickel, which produces redness, itching and sometimes a rash. If you experience itching or irritation as well as the green discolouration, that is worth paying attention to when choosing future pieces.
For anyone who experiences sensitivity reactions to jewellery, our guide on jewellery for sensitive skin in Australia covers this in much more detail.
Which Metals Cause the Green Reaction
| Metal or Material | Turns Skin Green? | Why |
|---|---|---|
| Copper | Yes | Primary cause. Oxidises to form green copper salts. |
| Brass (copper and zinc alloy) | Yes | Contains copper. Produces the same green reaction. |
| Standard Gold Plated on Brass | Once layer wears | Thin gold layer wears away, exposing brass base beneath. |
| Stainless Steel | No | Does not contain copper. Does not oxidise or corrode. |
| 18K PVD Stainless Steel | No | Stainless steel base. No copper. No green reaction possible. |
| Sterling Silver 925 | Sometimes | Contains 7.5% copper. Can cause green tinge on some skin types. |
| Solid Gold (9K to 18K) | No | Does not contain copper at levels that cause green reactions. |
Why Your Skin Chemistry Matters
Two people can wear the same piece of jewellery and one will see green marks while the other does not. This is because skin chemistry varies between people. The acidity of sweat, skin oil composition and individual body chemistry all affect how quickly the copper oxidation reaction occurs and how much of the green compound transfers to skin.
Some people have more acidic sweat than others. People who take certain medications, eat particular diets, or live in hot climates and sweat more can experience the green reaction faster and more visibly. This is why one person says a piece is fine and another gets green skin from the same ring within a week.
The only reliable way to avoid this entirely is to choose materials that do not contain copper at all. Stainless steel and 18K PVD gold plated stainless steel are the most accessible options that guarantee this at an everyday price point.
How to Stop Jewellery Turning Green
There are a few approaches, ranging from temporary fixes to permanent solutions.
- 1 Switch to stainless steel or 18K PVD gold plated stainless steel. This is the permanent solution. These materials do not contain copper. The green reaction is chemically impossible. GLISTIA pieces are made from this material for this exact reason.
- 2 Avoid wearing cheap pieces in water or during workouts. Water and sweat accelerate the copper oxidation. Keeping pieces dry extends their wearable life before the green reaction starts. This is a temporary fix, not a solution.
- 3 Apply a thin layer of clear nail polish to the inside of the piece. This creates a barrier between the copper base and your skin. It helps for a while but wears off and needs reapplication. Again, a temporary measure.
- 4 Remove jewellery before washing hands, showering and working out. Reducing exposure to moisture slows the process. Not a practical long term solution for pieces you want to wear daily.
The honest answer is that options 2, 3 and 4 are workarounds for a materials problem. The only solution that actually solves it is option 1. Choosing jewellery made from materials that do not react with skin chemistry.
GLISTIA pieces are made from 18K PVD gold plated stainless steel. No green reaction. Just jewellery you can wear every day.
Shop Waterproof JewelleryWhy 18K PVD Gold Plated Stainless Steel Does Not Turn Green
The answer is simple. Stainless steel does not contain copper. There is no copper to oxidise. There is no green compound to form. There is nothing to transfer to your skin.
The stainless steel base in GLISTIA pieces is surgical-grade, which means it is designed for applications where it is in constant contact with the human body. It is the same grade of steel used in medical implants and surgical instruments. It is inert against skin. It does not react with sweat, moisture or skin chemistry.
The 18K PVD gold plating on top sits on this inert base. Even in the unlikely scenario that the PVD coating wore significantly, the surface beneath it is stainless steel, which still produces no green reaction. This is fundamentally different from standard gold plated jewellery where the base is copper or brass that reacts immediately once the gold layer is gone.
For a complete understanding of how 18K PVD gold plating works and why it lasts longer than standard plating, see the difference between 18K PVD and regular gold plating. For the full picture on waterproof jewellery, our complete guide to waterproof jewellery in Australia covers everything in one place.
What If Your Skin Is Reacting Beyond the Green Mark
If you are experiencing itching, redness, swelling or a rash from wearing jewellery, that is a different reaction to the green copper oxidation described above. It is more likely a sensitivity to nickel, which is a common allergen found in many cheap base metals.
Nickel sensitivity is one of the most prevalent contact allergies in Australia. Symptoms typically appear where the piece touches skin, most commonly on the earlobes, fingers and wrists. If this sounds familiar, switching to surgical-grade stainless steel is one of the most reliable steps to take. The material does not contain nickel at levels that cause reactions for most people with nickel sensitivity.
Every person's skin is different. If you experience any persistent reaction, remove the piece and seek advice from a dermatologist or GP. A GLISTIA piece may be a good option to try but we cannot make guarantees about individual skin reactions.
About GLISTIA
GLISTIA is a Sydney-based jewellery brand making premium 18K PVD gold plated stainless steel jewellery for Australian women. No copper base metals. No green skin reactions. No tarnishing. Just beautifully made pieces you can wear every day. The range covers gold plated earrings, gold plated necklaces, gold plated bracelets and bangles, gold plated rings and gold plated anklets. Dispatched from Sydney with free shipping on qualifying Australian orders.
Free shipping on qualifying Australian orders. 30-day returns. Dispatched from Sydney, NSW.
Shop the Waterproof CollectionFrequently Asked Questions
Why does jewellery turn your skin green?
Jewellery turns skin green because the base metal in the piece, usually copper or brass, oxidises when it contacts moisture and the mild acids in your sweat. This oxidisation produces green copper salts that transfer onto skin. It is not harmful but it does mean the base metal is reacting with your skin chemistry.
Is green skin from jewellery harmful?
The green discolouration itself is not harmful. Copper oxidation products are not toxic at the levels produced by jewellery. The green washes off with soap and water. If the reaction is accompanied by itching, redness or swelling, that may indicate a metal sensitivity which is a different issue worth noting.
What jewellery does not turn skin green?
Jewellery made from stainless steel, 18K PVD gold plated stainless steel, solid gold and platinum does not turn skin green. These materials do not contain copper or do not corrode in the way that causes the green reaction. 18K PVD gold plated stainless steel is the most accessible option at an everyday price point.
Does 18K PVD gold plated jewellery turn skin green?
No. 18K PVD gold plated stainless steel does not turn skin green. The stainless steel base does not contain copper, so the green oxidation reaction cannot occur. GLISTIA pieces are made from this material so you never have to worry about green marks on your skin.
Why does cheap gold jewellery turn green?
Cheap gold plated jewellery turns green because the base metal underneath the thin gold layer is usually brass or copper. As the gold layer wears away from daily use, sweat and moisture, the copper base is exposed and begins to oxidise. The thinner the gold layer, the faster this happens.
